Agricultural implement



5m 11 wzsc 3,462,894

L. L. DUBOlS AGRICULTURAL IMPLEMENT Filed Sept. 15 1920 4 Sheets-Sheet 1l i I i l l 1 il i i Sept 11 1923.

L. L. DUBOIS AGRICULTURAL IMPLEMENT Filed Sept. 15, 1920 shee'ts-sneet 2swi 11 E923. I 11,467,894

. L. L. DUBOIS AGRICULTURAL IMPLEMENT Filed Sept. 15 1920 4 Sheets-Sheet5 4; Flgafi figiii I In vewz ar:

%fforny Sqmfi. 11,1923. 9 73 L. L. DUBOES AGRICULTURAL IMPLEMENT FiledSept. 15, 1920 4 Sheets-$heet 4 Flgifl Z4 1 Z1 [My 2m 7 Lu @W affar yFatented Sept. 11, 11923.

rarest LUBIN LOUIS DUBOIS, OF ASNIERES, FRANCE.

AGRICULTURAL IMPLEMENT.

Application filed September 15, 1920. Serial No. 410,567.

T 0 all 1071 0m z't may 0071 06m Be it known that I, LUniNILoUIs Donors,a citizen of theFrench Republic, residing in Asnieres. France, haveinvented new and useful Improved Agricultural Implements, of'which thefollowing is a specification.

This invention relates to tractor drawn m'ultiple plows having two setsof plows' mounted in diametrically opposed relation upon the same beam,the object of the invention being to provide a combined tractor and plowstructure whereby the multiple plow can be automatically rotated on theaxis of its beam at the end of a furrow to rariy one set of plows'outofand the other set'into operative position with means for thereafterautoinatica lyloclzii'ig the beam against rotation" 1' i In c'arr lno'out in invention I irovide a to y tractor having a pair ofreartractorwheels mounted on an axis with means for driving said wheelsindependently forwards and backwards and with independent brake meansfor each wheel, said'tractorbrake also having a front sw vel wheelnormally posi-j tioned above the ground and the tractor beingconstructed to'tip about the axis of said tractor wheels to bring saidfront swivel wheel into contact with the ground when the tractor isbacked at the end of a furrow. I further provide a vertically adjustablesocket on the tractor in which the plow beam is journalled at its frontend with manually releasablelocking'means carried in v part by thetractor and in part by'the plow beam for automatically locking the plowbeam against further rotation when it has been rotated at the end of afurrowto carry one set of plows out ofand the other set into operativeposition. i

The invention is illustrated'byway of em ample on the accompanyingdrawing wherefurrowed Brabaiit plough connected with tractor of the typedescribed in the applieation for a patent filed by applicant in theUnited States of America under the Serial Number 892793. I

Fig. 1 is a view of the tractor and plow when the end ofa furrow isreached and the driver begins to move. backwards.

Fig. 1 is a diagrammatic view illustrat ing the turning of the plowthrough 120 with'the brake applied to'the landwheel.

Fi 1' is a side elevation of a double three I later, intermittentlyengages.

V Aig. 1 is a view illustrating the turning of the plow throughthe finalwith the brake applied to the furrow wheel. i

Fig. 2 is a plan view of the plough. Fig. 3 is an enlarged end View of.the supporting bush on the tractor frame.

liig. t is a'plan View thereof. Fig. 5 is an enlarged plan View showinga preferred means for supporting the plough onthe tractor. I

Fig. 6 is a plan view thereof. Fig; 7 is an end elevation of a modifiedmeans of support.

Fig. 8 is a plan, view of said means. Fig. 9 is a view in profileshowing a deail. v f V Fig. 10 is a plan view of theplough with theparts thereof raised from the ground.-

Fig. 11 illustrates the plough with the parts thereof in ploughingposition.

Fig. 12 illustrates a detail.

Fig. 13 a side elevation of a regulatable si'vivel wheel at the front ofthe tractor,

and V Fig. 1-1 is affrontfielevation thereof.

As can be seen in these figs. the multifurrow plough'l' is connected bymeans of a joint 2 and socket 15 with a tractor of the type described inthe aforementioned application or if desired it may be connected :With atractor the rear wheels of which are controlled by means of adifferential gear.

The beam 3 of the ploughengages with the socket 15 and cannot therefore,be dis placed except around the axis thereof being otherwise rigidlyconnected with the tractor. Thus when the tractor pitches and rests onthe front swivel wheel 5Ithe plough will be raised and remain suspendedbehind it.

The socket 15 is integral with the lower endof a 'vertical stem 16slidably mounted in sleeves 1'7. Cooperating with the upper sleeve is anut 18 operated by ahand-wheel 19 whereby the stem 16 and socket 15 maybe adjusted vertically. r

(in the beam 3 of the plough -a' yoke is mounted said yoke being twoparts 4;, 4 and provided with slots 6, 6 into which bolts 7, T engageand serve to secure the parts et, at to the body or beam of the ploughthe said parts being adjustable and being held in position by saidbolts. I y 4 Each of said parts 1-, 4 has a notch S, 8 into which a pawlwhich will be described I zontal' axis brings one of The position of theparts 4:, 4: can be reg ulated by displacing them concentrically to theaxis of rotationof the plough after loosening and again tighteningthe'bolts 7, 7'

sosas to raise or lower the notches 8, 8 ac cording to the depth of thefurrow in which the tractor wheel is running and in such a manner thatthe planes of the plough shares or coulters are always vertical theshares being in the same horizontal plane.

V A member 10 isprovided on the support of the socket'15 and serves asabearing for the pivot otan oscillating pawl 11 to which said rope beingcontrolled by a pedal, for ex ample actuated by the foot'oi' the driverof the tractor.

The operation is asjtollows:

The multiple plow being attached to the "tractor withvone set of plowsin operative -position, as. shown in Fig. 1, just beforereaching the endof a furrow the driver presses down on the pedal to disengage pawl 11from one of the notches 8, 8; The plow is nowno longer held against thestresses tending to rotate it about the axis of its beam. When thereforethe driver removes pressure fromthe pedal, the pawl not being oppositeone of the notches rests on the circ'umterenceof the part 4:, 4:. 1

The driver now stops the tractor and then runs it backwards a shortdistance where ;upon due to the reaction couple developed.

by theengine or motor, the tractor tips 7 around the axis or its drivingwheels bring-f ing the front swivel wheel 5 nto contact with the groundand raising the plow shares a dmouldboards; V

w As soon as the shares are thus raised, the driver, still runningbackwards, applies a hand brake 2l'to the tractor wheel which is on theunplowed soil. This causes the tractor with the raised plow to swingabout the braked wheel as a pivot. During this swinging movement whichtakes place, the slight contact which the share'shave at thecomm'encement off the movement with the soil causes the multiple plow toturn on its axis.

This turningmovement can, of course, be

obta ned by distributing the masses of the plow unequally with respectto itsaxis.

After the tractor has swung around through an angle of about 120degrees, the driver stops thetractor, releases the brake 21 from thewheel to which it was applied and applies anotherbrake 21 to the otherwhee-land then runs forward. This causes the tractor to swing about thelatter wheel as a pivot. This swinging movement is carried out throughan angle of about 60 degrees. Thus the plow and tractor have been swungthrough'an' angle of 180 degrees.

Due to the reaction couple developed in,

changing from backward to forward movement during the swinging movementof the.

tractor, the plow is applied to the soil upon which it fastens firstwith the shoe and then with the shares. As simultaneously the plowdescribes an arc of circle ofabout 60 degrees, turning couple sproducedwhich makes it turn'aboutits axis, theetl'cct being 7 to bring a notch8. or 8 opposite the pawl 1 1i 7 V therewith Z V whichautomaticallyengages V under-the action oii spring 12 to lock the plowagainst further rotation.

The'driver now releases the second brake 21 and startsotf inadlametrically. opposite direction to that inwhich he was previouslymoving.

At each end of the field, the sameseries of operations'isrepeated.fRegulation of the parts 4, 4: is made once T01: all when depthof the furrowis fixed. i Instead of arranging thepawl on thetrac tor andthe fixation vnotches in the plough the inverse arrangement can, ofcourse, be adopted without affecting the invention, the

essential feature to obtain the required result? being a member whichimmobilizes' the plough automatically after eaehturnmg.

The means describedconstitute the essen tial means to attain thespecified .results,fbut

itmay be of advantage ito'supplementthem: by secondary means makingeasier to attain the aforesaid results. I v These secondary meanscons1st 1. In making als'upple mental notch on the parts 4, t by meansof which, during trans. r portation the plou'gh jcan. be placed hori-vzontal with the: shares and mouldboards, in.v

the air.

. 2. In replacing the l ghi h 1b a g i v wheel which, whilstfacilit-atingthe evolu tions of the plough makes it possible, to-

gether with thefore swivel wheel of the:

tractor to instantaneously displace -the plough from the furrow,moving-forwards or backwards, ithout the addit on of any supplementalmember '3. In. a regulating device for the tore swivel wheel by means ofwhich any suitable position can be givenito this wheel, n'relation' tothe vertical, either with a view to adapting the tractor to all theoperations of coupling a ploughing implement or to malting thefore-carriage a three wheel tractor. These secondary means areillustrated by way-,of example in Figs. '7' to 1 4 of the accompanyingdrawings. I e 1 As shownlinFigs. 7 and ,8, theturning device comprisesthree notches'instead oft-he two notches viz. two 8, 8 on the -parts4,4''

-forming a median notch,

and a notch 8 ice shown in unbroken lines mFig. 9.

Whilst the plough is Working this Wingrests on the beam occupying theposition In this position. it is inoperative and the pawl 11 can passfreely from 8 to 8 during; the operation of turning without-engagingnotch 8". During transportation, on the contrary, thiswing is raised byhand tothe position indicated in brokenlines in Fig. 9,- and the pawl 11engaged, to unite the plough spect more satisfactorythan the shoe, asuperior'ity due to the fact that it displaces, as

and tractor and keep it horizontal, .the

shares and mouldboards being in the air.

RA nu Another method-of obtaining this'third notch consists in makingapart of the notch in each of the pieces 4, 4. In this case a hinged ingfixed on thebeam and worked -20 by hand would, when-required: engagethe' notch-8, working position. or on the contrary leave it open, roadposition. In the first case, the pawl l1 would pass from 8 to" 8' duringthe operation of turning, without being stopped at 8"" and in the secondcase it would be engaged'in 8 and there remain fixin'g the plough inposition for the road. This second method however has the inconvenienceof leaving considerable play between the wing and sides of the notchaccording to the relative positions given in regulating the two piecesconstituting the yoke. To support the plough in the road position theshoerepresented in Figs. 1 and 2 is replaced by a swivel wheel 24, ofsuitable diameter, which can pivot under the beam of the plough andsupport it at any point.

When the plough is fixed by engagement of the pawl 11 in the notch 8" itrests upon the wheel 24 and the plough can be displaced running on thetwo tractor Wheels, on the one hand moving forward on the swivel wheel24, and backwards on the fore wheel 5 represented in Figs. 1 and 2. Inboth cases, steering is operated by braking, on the axle of one or'otherof the driving wheels of the tractor. This application of the wheel 24is of considerable importance because, for displacements outside thefurrows, either in the field or on the road, it avoids the necessity ofluving a hind-carriage which is always cumbersome, and is also more orless easy to mount and dismount.

The swivel wheel 24 also intervenes when the plough is not fixed in thehorizontal position by engagement of the pawl 11- in the notch 8 andwhen it occupies this position freely during work whilst turning.

hen the movement described in paragraph 5 of the operation of the plowis made, when the plough is bginning to describe its arc of circle of 60the swivel wheel will acquire the position 24, for example, if the brakeis put on the left wheel of the tractor or 24 if the right hand wheel isbraked. Thus the supporting point of the wheel 24-which: is in thevertical plane passing through the longitudinal axis of the plough, isdisplaced owing to'rotation of the pivot of the wheel and the ploughdips down by its own Weight in the direction requisite for its completeadjustment.

It is to be noted that neither the swivel wheel 24' nor the shoereferred to in the previously described mode of the construction,

are essential to permit turning of the ploughr but they facilitate it toa great extent; moreover the swivel wheel 24 is in this restated, in' asuitable direction, the supporting-point of; the plough atcommencementof 1 the soil, the following device has been adopted On the,axis of the support 25 supporting the wheel. and on the opposite side tothat I where this support supports the axis of the wheel 24, there is alever 25" of suitable length to'the end of which aspiral spring 26 isattached the spring running along the plough beam 3 and paralleltherewith and being fixed thereto; by its other extremity. The effect ofthis spring is that when the wheel does not bear upon the soil, as Fig.

11 the said spring brings the Wheel back to' the horizontal planepassing through the plough beam, and when the wheel rests on the soil,the spring 26 under the effect of the stresses of reaction which actupon the wheel relaxes and allows the wheel to find its position underthe eifect of these stresses. 7

In some special cases the spring 26 can of course, be dispensed with.

The-fore-wheel 5 as previously stated is capable of being steered andcan also be regulated in height by means of the device represented inFigs. 13 and 14.

As can be seen in these figs. the support of the wheel 5 has acylindrical bar 27 u on -which a jacket 28 is keyed, the said jac etbeing threaded at the upper part 29 and able to turn in the socket 30,interdependent with the frame, the said socket surrounding the outsideof the acket.

A nut 31 upon which a hand wheel 32 is keyed engages with the threads ofthe jacket 28 and axial displacement is prevented by a stop-piece 33engaged in a circular opening of the socket 30. Rotary motion given tothe handwheel 33 makes the wheel 5 ascend or descend with regard to thetractor frame.

The swivel wheel can thus be adapted for the part it plays during work,to utilize the reaction couple causing the plough to swing or for workduring displacement outside the furrow as the third wheel of an ordinarythree wheel tractor.

"In the first" case;; it is' made to rise' toa descend to the extenttractor.

, In both casesits steerabil-ity facilitates the evolutions of theappliance and enables its guidance by braking one or the other drivingwheel, a mode of steering sometimes bet-f terfora heavy fore-carriage,than steerage wlth screw and sectors. i

- In this description onlythe case of a plough coupledto a-tractor hasbeen consid of implement coupled with the tractor. I

i What I claim is 1 The combination. with a; tractor, comprislng a pairof rear wheels, means for driving sa1d wheels independently forwards andbackwards, brake means for each of said I wheels, a front swivel wheelnormally elevated above the ground, said tractorbeing con- ,endofthefurrow.

into engagement with the ground upon back ward movement of said tractor,and a'socket member carried by said tractor,'of a multiple plow,comprising a beam journalled 'at its forward end in said socket memberfor movement of rotation about its'aXis, and two sets vof diametricallyoppositely arranged. .plowscarriedby 'said beam, and'manually' 1releasable meanscarried'inpart by said trac' tor andi-n'part by said:multiple plow for l automatically locking said beam against rotationwitheither set of plows I in operative position, said beam being adapted tobe autoered, but it is quite evident that the afore- "mentioned means orcombination of-means couldbe employed irrespective of the kind maticallyrotated by reason of the engagement of the tips fof'thedplowswiththeground when said tractoris turned at the 2AA combined mechanism as setforth in claim 1- inwhich the means for automatically locking the plowbeam against rotation' comprises-Va two-part yoke mounted o'nthe beam, 7

each part provided with. a notch Hand said parts being relativelyadjustable to vary the distance betweenlsaid notches, and

a spring-pressed lever pivoted on the tractor. e ,DUBOISJ

